Show HN: A fullscreen HSL color picker (mousemove/scroll) (hsl.ruiramos.com)

Something I did as an introduction to Functional Reactive Programming (with Bacon.js) but that I guess it might be useful for some designers who like their colors big. Click to lock the current color/copy the values. Code here: https://github.com/ruiramos/hsl

Adding the instructions to the display might improve user experience and make for an interesting design problem.